KR20150050387A - Aqueous dispersion of silicone rubber particle, silicone rubber particle, and cosmetics - Google Patents

Abstract

One of the purposes of the present invention is to provide an aqueous dispersion of silicone elastomer particles to provide a stable emulsion and the silicone elastomer particle, wherein a polyoxyethylene alkyl ether which has an alkyl group having a large number of carbon atoms is used as a surfactant. Further, another purpose is to provide a cosmetic comprising the aqueous dispersion or the silicone elastomer particles and giving a good feeling in the use. The present invention provides an aqueous dispersion comprising: (A) silicone elastomer particles having a 90% volume cumulative diameter (D90) of 0.3 to 20 μm in an amount of 5 to 80 mass %, based on a total mass of the aqueous dispersion; (B) at least one polyoxyethylene alkyl ether having an alkyl group having 18 carbon atoms in an amount of 0.01 to 15 mass %, based on a total mass of the aqueous dispersion, wherein a hydrophile-lipophile balance (HLB) of the polyoxyethylene alkyl ether is 12.8 to 15.1; and (C) water in an amount of 19 to 94 mass %, based on a total mass of the aqueous dispersion. Also, the present invention provides a material which is made of the component (B) to be attached to the surface of the component (A), and a cosmetic containing the material or the aqueous dispersion.

Description

AQUEOUS DISPERSION OF SILICONE RUBBER PARTICLE, SILICONE RUBBER PARTICLE, AND COSMETICS}

The present invention relates to an aqueous dispersion of silicone rubber particles and silicone rubber particles, and cosmetic compositions containing them.

Silicone rubber particles are used for the purpose of giving a feeling of use such as soft feeling and smoothness to a cosmetic material, a purpose of making a cosmetic material natural finish by scattering light, a purpose of making it difficult to show pores and wrinkles, Purpose cosmetics such as foundations for foundation and cosmetics, basic cosmetics such as creams and milky lotion, sunscreen cosmetics and other cleansing cosmetics.

When an aqueous dispersion of silicone rubber particles is used for a cosmetic composition of an aqueous or O / W system, it can be easily incorporated into a cosmetic composition. However, since the foundation, sunscreen, cosmetic foundation, concealer and the like as described above often require water resistance in cosmetic materials, it is necessary to blend the silicone rubber particles in a non-aqueous system or a W / O system. In such a case, it is known that silicone rubber particles are blended as a powder.

For example, Japanese Patent Application Laid-Open No. 62-243621 (Patent Document 1) discloses a method in which a curable silicone oil is dispersed in water using a surfactant and then subjected to a curing reaction to obtain an aqueous dispersion of silicone rubber particles , And further water is removed to obtain spherical silicone rubber particles. Japanese Patent Application Laid-Open No. 62-257939 (Patent Document 2) discloses a method for obtaining silicone rubber particles by spray-drying an aqueous dispersion of silicone rubber particles containing a surfactant. According to this method, spherical silicone rubber particles with low cohesion can be easily obtained.

Surfactants used for preparing an aqueous dispersion of silicone rubber particles are highly emulsifying. Therefore, polyoxyethylene alkylphenyl ether having alkyl of 8 to 9 carbon atoms or polyoxyethylene alkylether having alkyl of 12 to 13 carbon atoms is generally used. For example, the surfactant described in Patent Document 1 is a polyoxyethylene alkyl ether having an alkyl of 12 carbon atoms. The surfactant described in Patent Document 2 is a polyoxyethylene alkylphenyl ether having an alkyl of 8 carbon atoms. Japanese Unexamined Patent Application Publication No. 11-293111 (Patent Document 3) discloses an aqueous dispersion of silicone rubber particles using polyoxyethylene alkyl ether, wherein at least 10% by weight of alkyl in the alkyl ether has a carbon number of 13 , It is described that a granular silicone cured suspension having a narrow particle size distribution is obtained with a small amount of a surfactant.

It has also been proposed to use an ionic surfactant. For example, Japanese Patent Application Laid-Open No. 11-140191 (Patent Document 4) discloses an aqueous dispersion of silicone rubber particles in which a nonionic surfactant and an ionic surfactant are used in combination, and storage stability is improved . Japanese Patent Application Laid-Open No. 2002-235004 (Patent Document 5) discloses an aqueous dispersion of silicone rubber particles using an amphoteric surfactant having an alkyl of 11 to 17 carbon atoms, and it is described that the dispersibility in cosmetics is improved have.

However, polyoxyethylene alkylphenyl ether is not used in cosmetics because its decomposed product may have an endocrine disrupting effect. In addition, ionic surfactants have a high irritation to the skin, and thus they are used particularly in cosmetics which are applied to the skin and keep the cosmetics on the skin for a long time, such as basic cosmetics, makeup cosmetics, and ultraviolet cut cosmetics. In addition, when the number of carbon atoms of the alkyl group of the polyoxyethylene alkyl ether is small, it may be used in cosmetics because it has irritation to the skin.

Japanese Patent Laid-Open No. 2003-12929 (Patent Document 6) discloses an aqueous dispersion of silicone rubber particles using polyoxyethylene sorbitan monolaurate. However, the surfactant of the sorbitan fatty acid ester has a low irritation to the skin, but has low emulsifying and dispersing ability to the curable silicone oil.

Japanese Patent Laying-Open No. 2003-183501 (Patent Document 7) discloses an aqueous dispersion of silicone rubber particles using polyoxyethylene alkyl ether having 16 carbon atoms. Patent Document 7 discloses that the use of an oxyethylene adduct of an alcohol having 16 carbon atoms as a surfactant provides an emulsion having excellent stability and little influence on the human body and having good dispersibility in cosmetics have.

Japanese Patent Application Laid-Open No. 62-243621 Japanese Patent Laid-Open No. 62-257939 Japanese Patent Application Laid-Open No. 11-293111 Japanese Patent Application Laid-Open No. 11-140191 Japanese Patent Application Laid-Open No. 2002-235004 Japanese Patent Application Laid-Open No. 2003-12929 Japanese Patent Application Laid-Open No. 2003-183501

As described above, the polyoxyethylene alkyl ether is less irritating to the skin as the number of carbon atoms of the alkyl group is larger. Therefore, the present inventors have investigated the use of a polyoxyethylene alkyl ether having an alkyl group having a larger number of carbon atoms as a surfactant, in order to further lower the irritation to the skin of the silicone rubber particles. However, when the number of carbon atoms in the alkyl group is large, the polyoxyethylene alkyl ether has a problem in that the emulsifying power to the curable silicone oil is weakened, emulsification and dispersion can not be performed, and the particle diameter distribution is widened. In addition, there is also a problem that when used in cosmetics, the feeling of use and applicability are deteriorated.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances and aims to provide an aqueous dispersion of silicone rubber particles and a silicone rubber particle which use a polyoxyethylene alkyl ether having an alkyl group having a large number of carbon atoms as a surfactant and provide a stable emulsion . It is another object of the present invention to provide a cosmetic composition containing the aqueous dispersion or silicone rubber particles and having a good feeling of use.

As a result of intensive studies, the present inventors have found that an aqueous dispersion of silicone rubber particles having good stability can be provided by setting the HLB value of the polyoxyethylene alkyl ether having an alkyl group of carbon number 18 to a predetermined range.

That is,

(A) Silicone rubber particles having a volume cumulative 90% diameter (D90) of 0.3 to 20 mu m

                         Based on the total mass of the aqueous dispersion, 5 to 80 mass%

(B) at least one of polyoxyethylene alkyl ethers having an HLB value of 12.8 to 15.1 and an alkyl group having a carbon number of 18

                      0.01 to 15% by mass with respect to the total mass of the aqueous dispersion,

And

(C) 19 to 94 mass%, based on the mass of the entire water-water dispersion, of an aqueous dispersion of silicone rubber particles.

In addition,

(A) at least one of polyoxyethylene alkyl ethers having an HLB value of 12.8 to 15.1 and an alkyl group having a carbon number of 18 and (B) at least one of polyoxyethylene alkyl ethers having an HLB value of 12.8 to 15.1 on the surface of silicone rubber particles having a volume cumulative 90% (Hereinafter referred to as a silicone rubber composite) and a method for producing the silicone rubber composite.

The polyoxyethylene alkyl ether included in the aqueous dispersion and silicone rubber composite of the present invention has an alkyl group having a larger number of carbon atoms than conventional surfactants. As a result, the irritation to the skin can be further reduced. Further, the present invention can provide an aqueous dispersion having good stability. The cosmetic composition containing the aqueous dispersion or silicone rubber composite of the present invention is excellent in feeling of use.

Hereinafter, the present invention will be described in more detail.

[Water dispersion liquid of silicone rubber particles]

A first aspect of the present invention is an aqueous dispersion of silicone rubber particles containing (A) silicone rubber particles, (B) a polyoxyethylene alkyl ether, and (C) water.

(A) a silicone rubber particle

In the present invention, the shape of the silicone rubber particles as the component (A) is not particularly limited, but spherical shape is preferable. The term " spherical " means not only that the shape of particles is spherical, but also the length of the longest axis / length (aspect ratio) of the shortest axis is 1 to 4, preferably 1 to 2, more preferably 1 to 1.6, Quot; means a modified sphere in the range of 1 to 1.4. As will be described later, when an emulsion is produced by a method of emulsifying and dispersing liquid silicone in water using a surfactant and then crosslinking, the shape of the resulting particles becomes spherical. The shape of the silicone rubber particles can be confirmed by observation with an optical microscope when the particle diameter of the particles is about 1 탆 or more in the case of an aqueous dispersion. When water is removed, the shape can be confirmed by observation with an electron microscope even if the particle diameter is 1 μm or less.

In the present invention, the volume cumulative 90% diameter (D90) of the silicone rubber particles is in the range of 0.3 to 20 mu m, more preferably 3 to 15 mu m. If the volume-cumulative 90% diameter (D90) is larger than the upper limit value, the smoothness of the cosmetic material may be lowered, and a feeling of slipping may occur, and the light diffusing property may also be deteriorated. The silicone rubber particles preferably have a volume average particle diameter of 0.2 to 15 占 퐉, more preferably 1 to 10 占 퐉, particularly 2 to 9 占 퐉. When the volume average particle diameter is less than the above lower limit value, there is a fear that the effect of smoothness and light diffusing property may not be sufficiently imparted to cosmetics. If the volume average particle diameter is larger than the upper limit value, the smoothness of the cosmetic material may be lowered, and a feeling of being pulled off may occur, and the light diffusibility may also be lowered. The volume average particle diameter and the volume cumulative 90% diameter (D90) are measured by an electrical resistance method of 1 탆 or more and by a laser diffraction / scattering method of less than 1 탆 according to the particle diameter of the silicone rubber.

The silicone rubber particles are preferably free of stickiness. The rubber hardness is preferably in the range of 5 to 90, more preferably in the range of 10 to 80, as measured by a Type A durometer specified in JIS K 6253. If the rubber hardness is below the lower limit value, there is a fear that the smoothness is lowered. If the rubber hardness is higher than the upper limit value, there is a possibility that the soft touch is insufficient.

The silicone rubber preferably comprises a cured product having a linear organosiloxane block represented by the formula - (R ¹ ₂ SiO _2/2 ) _n -. Wherein R ¹ is a substituted or unsubstituted monovalent hydrocarbon group of 1 to 30 carbon atoms, and n is a positive integer of 5 to 5,000.

Examples of the R ¹ include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a decyl group, an undecyl group, a dodecyl group, a tetradecyl group, a pentadecyl group, , Heptadecyl group, octadecyl group, nonadecyl group, eicosyl group, henicosyl group, docosyl group, tricosyl group, tetracyl group and triacontyl group; Aryl groups such as phenyl, tolyl and naphthyl; Aralkyl groups such as a benzyl group and a phenethyl group; Alkenyl groups such as a vinyl group and an allyl group; A cycloalkyl group such as a cyclopentyl group, a cyclohexyl group, and a cycloheptyl group; And a part or all of the hydrogen atoms bonded to the carbon atoms of these groups is substituted with an atom such as a halogen atom (fluorine atom, chlorine atom, bromine atom or iodine atom) and / or an acryloyloxy group, methacryloyloxy group, A glycidoxy group, and a hydrocarbon group substituted with a substituent such as a carboxyl group.

The silicone rubber particles are obtained by curing the curable liquid silicone, and have a crosslinked structure (i.e., a three-dimensional network structure). The method of curing the curable liquid silicone to obtain the silicone rubber particles can be carried out according to a conventionally known method. (Poly) siloxane having a monovalent aliphatic unsaturated group bonded to a silicon atom, for example, a vinylsilyl group (≡SiCH═CH ₂ ) and a hydrogen bonded to a silicon atom in the presence of a platinum group metal catalyst (Poly) siloxane having an atom, that is, a hydrosilyl group (? SiH), can be used.

More specifically, the silicone rubber particles are composed of an organo (poly) siloxane represented by an average formula R ² _a R ³ _b SiO _{(4-ab) / 2} and having at least two olefinic unsaturated groups per molecule, (Poly) siloxane having at least three hydrogen atoms (hereafter referred to as SiH groups) represented by an average formula R ⁴ _c H _d SiO _{(4-cd) / 2} and bonded to silicon atoms in one molecule is referred to as an organohydrogenpolysiloxane ≪ / RTI > Alternatively, the silicone rubber particles may be prepared by reacting an organo (poly) siloxane represented by an average formula R ² _a R ³ _b SiO _{(4-ab) / 2} and having at least three olefinic unsaturated groups in one molecule, (Poly) siloxane represented by R ⁴ _c H _d SiO _{(4-cd) / 2} and having at least two SiH groups in one molecule. In the liquid silicone mixture, the blending amount of the organo (poly) siloxane having a monovalent olefinic unsaturated group and the organohydrogen (poly) siloxane is preferably from 0.5 to 2 SiH groups per one monovalent olefinic unsaturated group It is good to be a sheep.

R ² in the above formula is a substituted or unsubstituted monovalent hydrocarbon group of 1 to 30 carbon atoms excluding an aliphatic unsaturated group and R ³ is a monovalent olefinic unsaturated group having 2 to 6 carbon atoms. a and b are positive numbers satisfying 0 <a <3, 0 <b? 3 and 0.1 a + b? 3, preferably 0 <a? 2.295, 0.005 b 2.3 and 0.5 a + b &Lt; / = 2.3. R ⁴ is a substituted or unsubstituted monovalent hydrocarbon group of 1 to 30 carbon atoms excluding an aliphatic unsaturated group. c and d are positive numbers satisfying 0 <c <3, 0 <d? 3 and 0.1? c + d? 3, preferably 0 <c? 2.295, 0.005? d? 2.3 and 0.5? c + d? 2.3 is a positive number.

Examples of R ² include a methyl group, an ethyl group, a propyl group, a butyl group, a pentyl group, a hexyl group, a heptyl group, an octyl group, a decyl group, an undecyl group, a dodecyl group, a tetradecyl group, a pentadecyl group, An alkyl group such as heptadecyl group, octadecyl group, nonadecyl group, eicosyl group, henicosyl group, docosyl group, tricosyl group, tetracyl group and triacontyl group; Aryl groups such as phenyl, tolyl and naphthyl; Aralkyl groups such as a benzyl group and a phenethyl group; A cycloalkyl group such as a cyclopentyl group, a cyclohexyl group, and a cycloheptyl group; And a part or all of the hydrogen atoms bonded to the carbon atoms of these groups is substituted with an atom such as a halogen atom (fluorine atom, chlorine atom, bromine atom or iodine atom) and / or an acryloyloxy group, methacryloyloxy group, A glycidoxy group, a carboxyl group, and the like. However, it is industrially preferable that at least 50 mol% of the total R ² groups are methyl groups.

As R ³ , a vinyl group, an allyl group, a propenyl group, a butenyl group, a pentenyl group, a hexenyl group and the like can be mentioned, but industrially, it is preferably a vinyl group.

As R ⁴ , the same as R ² are exemplified.

The organo (poly) siloxane and the organohydrogen (poly) siloxane preferably have a kinematic viscosity at 25 ° C of 100,000 mm ² / s or less, and more preferably 10,000 mm ² / s or less. When the kinematic viscosity exceeds the upper limit value, it becomes difficult to obtain particles having a narrow distribution in the production method described later. The structure of the organo (poly) siloxane and the organohydrogen (poly) siloxane may be any of linear, cyclic and branched, but is preferably straight-chain. In the present invention, the kinematic viscosity is a value measured by an Oswald viscometer.

In the liquid silicone mixture, at least one of the monovalent olefinically unsaturated group bonded to the organo (poly) siloxane and the -SiH group bonded to the organohydrogen (poly) siloxane is present in the molecule at least three . If at least three of the molecules are not present, the resultant elastomer cured product is sticky.

The platinum group metal catalyst may be a known or well-known catalyst used in the hydrosilylation reaction. For example, a group of platinum group metals such as platinum (including platinum black), rhodium, and palladium; H ₂ PtCl ₄揃 kH ₂ O, H ₂ PtCl ₆揃 kH ₂ O, NaHPtCl ₆揃 kH ₂ O, KHPtCl ₆揃 kH ₂ O, Na ₂ PtCl ₆揃 kH ₂ O, K ₂ PtCl ₄揃 kH ₂ O, Platinum chlorides such as PtCl ₄ .kH ₂ O, PtCl ₂ , Na ₂ HPtCl ₄ .kH ₂ O (where k is an integer of 0 to 6, preferably 0 or 6), chloroplatinic acid and chlorinated Platinum salt; Alcohol-modified chloroplatinic acid (see U.S. Patent No. 3,220,972); A complex of chloroplatinic acid and olefin (see U.S. Patent No. 3,159,601, U.S. Patent No. 3,159,662, U.S. Patent No. 3,775,452); Platinum group metals such as platinum black and palladium on a carrier such as alumina, silica, and carbon; Rhodium-olefin complex; Chlorotris (triphenylphosphine) rhodium (Wilkinson's catalyst); A complex of platinum chloride, chloroplatinic acid or chloroplatinic acid salt with vinyl group-containing siloxane, particularly vinyl group-containing cyclic siloxane, and the like.

The blending amount of the platinum group metal catalyst may be an effective amount for promoting the hydrosilylation reaction. If the amount of the catalyst is excessively high, the polyether moiety of the later surfactant may be oxidized to generate odor, which is not preferable. Particularly, it is preferable that the mass conversion amount of the platinum group metal in the catalyst relative to the total mass of the liquid silicon mixture is 0.1 to 100 ppm, preferably 0.5 to 50 ppm, more preferably 1 to 30 ppm.

The silicone rubber particles of the present invention can be produced, for example, by reacting an organopolysiloxane represented by the following formula,

(Wherein p is the number of the organo (poly) siloxane having a kinematic viscosity at 25 캜 of not more than 100,000 mm ² / s, preferably not more than 10,000 mm ² / s, and R ² independently of one another are equivalence)

An organohydrogenpolysiloxane represented by the following formula

(Wherein q and q 'are numbers in which the kinematic viscosity of the organohydrogen (poly) siloxane at 25 ° C is 100,000 mm ² / s or less, preferably 10,000 mm ² / s or less, and q' ≠ 0 and R &lt; ⁴ &gt; are independently of each other as defined above)

, In the presence of the platinum group metal catalyst.

Alternatively, the silicone rubber particles of the present invention may contain an organopolysiloxane represented by the following formula,

Wherein p and p 'are numbers in which the kinematic viscosity of the organopolysiloxane at 25 ° C is 100,000 mm ² / s or less, preferably 10,000 mm ² / s or less, p' ≠ 0, and R ² And R &lt; ³ &gt; are independently of each other as defined above)

An organohydrogen (poly) siloxane represented by the following formula

(Wherein q and q 'are numbers in which the kinematic viscosity of the organohydrogenpolysiloxane at 25 ° C is 100,000 mm ² / s or less, preferably 10,000 mm ² / s or less, and R ⁴ are independently The same as above)

, In the presence of the platinum group metal catalyst.

The silicone rubber particles of the present invention may contain silicone oil, organosilane, inorganic powder, organic powder or the like in the particles. The blending amount thereof may be appropriately selected according to conventionally known silicone rubber particles.

The silicone rubber particles may contain an antioxidant for the purpose of preventing oxidation of components (B) and (D) to be described later. Examples of the antioxidant include tocopherol, p-t-butylphenol, butylhydroxyanisole, dibutylhydroxytoluene, tetra-dibutylhydroxyhexanoic acid pentaerythrityl, ethoxyquin, and the like.

The amount of the silicone rubber particles in the aqueous dispersion is preferably in the range of 5 to 80 mass%, more preferably 20 to 70 mass%, and still more preferably 40 to 60 mass% with respect to the total mass of the aqueous dispersion. If the amount of the silicone rubber particles is less than the above lower limit value, the productivity per silicone rubber particle is lowered, and the amount of the aqueous dispersion added to the cosmetic material increases, which is not preferable because it is inefficient. When the amount of the silicone rubber particles is larger than the upper limit value, the viscosity of the aqueous dispersion becomes high and handling becomes difficult.

(B) a polyoxyethylene alkyl ether

The polyoxyethylene alkyl ether functions as a dispersing agent for silicone rubber particles in an aqueous dispersion or a cosmetic. It also functions as an emulsifier for liquid silicone in the preparation of an aqueous dispersion of silicone rubber particles as described later. In the polyoxyethylene alkyl ether of the present invention, the alkyl group has 18 carbon atoms. If the number of carbon atoms is less than 18, irritation to the skin becomes high. If the carbon number is more than 18, there is a fear that the liquid silicone can not be emulsified. Further, it becomes difficult to obtain particles having a narrow distribution. Or the stability of the aqueous dispersion is deteriorated.

In the present invention, the alkyl group of the polyoxyethylene alkyl ether is straight-chain or branched. The polyoxyethylene alkyl ether in which the alkyl group is straight-chain is represented by the following formula (1)

Is a polyoxyethylene stearyl ether.

The polyoxyethylene alkyl ether in which the alkyl group has a branch is, for example,

Lt; / RTI &gt; One of these may be used alone or two or more of them may be used in combination. In the above formula, m means the number of moles of ethylene oxide added. m is an integer of 2 to 50, preferably an integer of 8 to 30, particularly an integer of 10 to 18, and one kind or two or more kinds having different numbers of m may be used in combination. Particularly, polyoxyethylene stearyl ether in which the alkyl group is linear is preferable.

In the present invention, the polyoxyethylene alkyl ether has an HLB value of 12.8 to 15.1, preferably 13.2 to 14.9. When the HLB value is lower than the lower limit value or higher than the upper limit value, there is a possibility that the liquid silicone can not be emulsified in the production step, and it becomes difficult to obtain particles with narrow distribution. Or the stability of the aqueous dispersion is deteriorated. The HLB value in the present invention is represented by the following formula

HLB = [molecular weight of polyoxyethylene moiety / molecular weight of polyoxyethylene alkyl ether] x 20

(Griffin's equation). When two or more polyoxyethylene alkyl ethers having different HLB values are used in combination, the HLB value is a mass average value.

The amount of the polyoxyethylene alkyl ether in the aqueous dispersion is preferably 0.01 to 15% by mass, more preferably 0.05 to 10% by mass, particularly 0.1 to 3% by mass, based on the total mass of the aqueous dispersion. If the amount of the polyoxyethylene alkyl ether is less than the above lower limit value, it becomes difficult to emulsify the liquid silicone in the production step, or it becomes difficult to obtain particles having a narrow distribution. In addition, there is also a possibility that the stability of the aqueous dispersion may deteriorate. In addition, even when the amount of the polyoxyethylene alkyl ether is higher than the upper limit value, the particle diameter of the obtained silicone rubber particles can not be reduced, and the water dispersion performance of the silicone rubber particles can not be increased. On the contrary, it is not preferable because irritation to the skin may increase.

(C) Water

In the present invention, water as the component (C) is a dispersion medium of the silicone rubber particles (A). Further, in the production step, a dispersion medium of liquid silicone is used, and for example, ion-exchanged water can be used. The amount of water in the aqueous dispersion is from 19 to 94 mass%, preferably from 30 to 80 mass%.

(D) polyoxyethylene sorbitan monostearate, polyoxyethylene sorbitan tristearate

(D), polyoxyethylene sorbitan monostearate and polyoxyethylene sorbitan tristearate are used as a dispersion medium of a platinum group metal-based catalyst as shown in the preparation of a dispersion of silicone rubber particles described later. The dispersion medium of the platinum group metal catalyst may be a polyoxyethylene alkyl ether as the component (B), but it is also possible to use a polyoxyethylene sorbitan monostearate or a polyoxyethylene sorbitan tristearate which is easily dissolved with a solvent used in a platinum group metal catalyst . More preferably, it is polyoxyethylene sorbitan tristearate.

The stearyl groups of polyoxyethylene sorbitan monostearate and polyoxyethylene sorbitan tristearate are linear or branched and the addition mole number of ethylene oxide is 2 to 50. [ Two or more kinds of these may be used alone or in combination of two or more. Examples of the polyoxyethylene sorbitan monostearate include polyoxyethylene sorbitan monostearate having an addition mol number of 6, polyoxyethylene sorbitan monostearate having an addition mol number of 20, polyoxyethylene sorbitan having an addition mol number of 20 And non-carbon monoisostearate. Examples of the polyoxyethylene sorbitan tristearate include polyoxyethylene sorbitan tristearate having an addition mol number of 6, polyoxyethylene sorbitan tristearate having an addition mol number of 20, polyoxyethylene sorbitan trioleate having an addition mol number of 20 And non-carbon triisostearate. Two or more kinds of these may be used alone or in combination of two or more. The blending amount of the component (D) is preferably 0.01 to 10% by mass, and more preferably 0.05 to 5% by mass in the aqueous dispersion.

· Other ingredients

The aqueous dispersion of the present invention may contain a water-soluble polymer for the purpose of improving the dispersibility of the particles. The water-soluble polymer is not particularly limited, and a nonionic water-soluble polymer, an anionic water-soluble polymer, a cationic water-soluble polymer and an amphoteric water-soluble polymer may be mentioned, but nonionic water-soluble polymers are particularly preferable.

Examples of the nonionic water-soluble polymer include a copolymer of vinyl alcohol and vinyl acetate, a polymer of acrylamide, a polymer of vinylpyrrolidone, a copolymer of vinylpyrrolidone and vinyl acetate, a polymer of polyethylene glycol and isopropyl acrylamide , Polymers of methyl vinyl ether, starch, methylcellulose, hydroxyethylcellulose, hydroxypropylcellulose, guar gum, xanthan gum and the like.

Examples of the anionic water-soluble polymer include polymers of sodium acrylate, copolymers of sodium acrylate and sodium maleate, copolymers of sodium acrylate and acrylamide, polymers of sodium styrenesulfonate, copolymers of sodium polyisoprenesulfonate and styrene, Carboxymethyl starch, starch phosphate, carboxymethyl cellulose, sodium alginate, gum arabic, carrageenan, sodium chondroitin sulfate, sodium hyaluronate, and the like.

As the cationic water-soluble polymer, for example, polymers of dimethyldiallylammonium chloride, polymers of vinyl imidazoline, polymers of methylvinylimidazolium chloride, polymers of ethyltrimethylammonium chloride, polymers of ethyltrimethylammonium chloride methacrylate , Polymers of acrylamidopropyltrimethylammonium chloride, polymers of methacrylamidopropyltrimethylammonium chloride, polymers of epichlorohydrin / dimethylamine polymers, polymers of ethyleneimine, quats of polymers of ethyleneimine, polymers of allylamine hydrochloride, poly Lysine, cationic starch, cationic cellulose, chitosan, and derivatives obtained by copolymerizing these with monomers having a nonionic or anionic group.

Examples of the both ionic water-soluble polymers include copolymers of acrylic acid ethyltrimethylammonium chloride and acrylic acid and acrylamide, copolymers of acrylic acid and acrylamide and methacrylic acid ethyltrimethylammonium chloride, Hoffman degradation products of polymers of acrylamide, and the like. .

The aqueous dispersion of the present invention may contain an antimicrobial preservative or an antimicrobial agent. Examples of the antibacterial agent include benzoic acid, salicylic acid, phenolic acid, sorbic acid, paraoxybenzoic acid alkyl ester, Pen, benzalkonium chloride, chlorhexidine chloride, trichlorocarbonylide, photosensitizer, phenoxyethanol, and the like.

Method for producing an aqueous dispersion of silicone rubber particles

The aqueous dispersion of the silicone rubber particles can be prepared by adding a polyoxyethylene alkyl ether as the component (B) and water as the component (C) to the above-mentioned curable liquid silicone, stirring the mixture into an emulsion, adding a platinum group metal- , Adding the component (D) according to the above-mentioned method, and further stirring to cure the curable liquid silicone.

The silicone rubber particles in the aqueous dispersion of the present invention have a volume cumulative 90% diameter (D90) of 0.3 to 20 占 퐉, preferably 3 to 15 占 퐉. As described above, since the volumetric cumulative 90% diameter (D90) falls within the above-mentioned range, the feeling of use of the cosmetic material, for example, the feeling of smoothness and stickiness is improved. The silicone rubber particles in the aqueous dispersion of the present invention preferably have a volume average particle diameter of 0.2 to 15 탆, preferably 2 to 10 탆. The particle diameter of the silicone rubber particles can be obtained by adjusting the amount of the polyoxyethylene alkyl ether having the HLB value of the present invention and the amount of water to be blended in the emulsification process within the above range according to the emulsification method. For example, in the case of emulsification using a homomixer, the more the polyoxyethylene alkyl ether is, the smaller the particle size tends to be. In the emulsification process, the smaller the water content, the smaller the particle size tends to be. The larger the particle size, the smaller the particle size.

When a silicone oil, an organosilane, an inorganic powder, an organic powder or an antioxidant is contained in the silicone rubber particles, they may be mixed with the curable liquid silicone in advance. The blending amount of these components may be appropriately selected so that the volume average particle diameter and the volume cumulative 90% diameter of the obtained silicone rubber particles fall within the above range.

The emulsification may be carried out using a common emulsifying disperser. Examples of the emulsifying disperser include a high-speed centrifugal radial stirrer such as a homodisper, a high-speed rotary shear stirrer such as a homomixer, a high-pressure emulsifying emulsifying disperser such as a homogenizer, a colloid mill, and an ultrasonic emulsifier .

The platinum group metal catalyst may be any of those described above. The platinum group metal catalyst may be added to the emulsion of the curable liquid silicone as described above, or may be dissolved in the curable liquid silicone beforehand. When the platinum group metal catalyst is added to the emulsion, it may be dissolved in a solvent and added. In addition, when the dispersibility to water is poor, it is preferable to add the platinum group metal catalyst in a state of being dissolved in polyoxyethylene sorbitan monostearate or polyoxyethylene sorbitan tristearate as the component (D). When the platinum group metal catalyst is previously dissolved in the curable liquid silicone, it is preferable to cool the solution at a low temperature of, for example, 5 캜 or less so that the curing reaction does not occur until the emulsification step is completed. Curing The curing reaction of the liquid silicone can be performed at room temperature, for example, at 15 to 20 占 폚. When the reaction is not completed, the reaction may be carried out under heating at a temperature lower than 100 ° C. The stirring time for curing is not particularly limited, but is usually 1 to 24 hours.

[Silicone rubber composite]

The present invention also provides a material (hereinafter referred to as a silicone rubber composite) in which the polyoxyethylene alkyl ether as the component (B) is adhered to the surface of the silicone rubber particle as the component (A). The silicone rubber composite is a particulate material that can be prepared by removing water from the aqueous dispersion obtained by the above method. The amount of the polyoxyethylene alkyl ether to the silicone rubber particles is preferably 0.1 to 20 parts by mass, preferably 0.3 to 5 parts by mass, more preferably 0.5 to 2 parts by mass, based on 100 parts by mass of the silicone rubber particles.

As a method of removing water from the aqueous dispersion, for example, a method of removing by volatility can be used. The above method may be carried out by heating under atmospheric pressure or reduced pressure. In the above process, the polyoxyethylene alkyl ether as the component (B) remains attached to the surface of the silicone rubber particle as the component (A). Further, when polyoxyethylene sorbitan stearate or polyoxyethylene sorbitan tristearate as the component (D) is used as a dispersion medium of the platinum group metal catalyst as described above, this component also remains on the surface of the silicone rubber particles.

As a method for removing water, more specifically, a method of removing water by standing the dispersion under heating, a method of removing moisture while stirring the dispersion under heating, a method of spraying and dispersing the dispersion in a hot air stream, A method of removing water, a method of using a fluidized heating medium, and the like. Further, as a pretreatment of this operation, the dispersion may be concentrated by a method such as centrifugation or decantation. It is also possible to add a salt, an alcohol or the like to the dispersion to destroy the dispersed state, and then to concentrate by filtration, centrifugation, decantation or the like.

When the entire amount of water is removed by volatilization, the components (A), (B) and (D) which are not volatile remain in the silicone rubber composite in the same ratio. Therefore, the amount of the component (B) relative to the component (A) in the resulting silicone rubber composite becomes equal to the amount of the component (B) relative to the component (A) in the aqueous dispersion. When the component (D) is contained in the aqueous dispersion, the amount of the component (D) relative to the component (A) in the silicone rubber composite is equal to the amount of the component (D) relative to the component (A) in the aqueous dispersion . On the other hand, when the dispersion is concentrated by a method such as centrifugation or decantation, the component (B) and the component (D) are dissolved in the water to be removed, And the ratio of the component (D) is changed.

In the present invention, a method of spraying and dispersing a dispersion liquid in a hot air stream to remove water (i.e., a spray drying method) is particularly preferable because solid agglomeration of the silicone rubber composite does not occur.

[Cosmetics]

The present invention also provides an aqueous dispersion of silicone rubber particles or a cosmetic containing the silicone rubber composite.

The aqueous dispersion and silicone rubber composite of the present invention can be compounded in various cosmetics. For example, it is suitably used for cosmetics such as skin care products, makeup products, hair products, antiperspirant products, ultraviolet protection products and the like, especially for skin or hair. The mixing ratio of the aqueous dispersion and the silicone rubber composite is not particularly limited and may be suitably selected in accordance with each preparation. In particular, it is preferable that the mass of the silicone rubber particles in the cosmetic composition is in the range of 0.1 to 50.0 mass%.

The average particle diameter of the silicone rubber particles preferably has an average particle diameter of about 2 to 15 mu m for the purpose of imparting an improvement in texture, a soft focus effect and a wrinkle pore cover effect. When used for the purpose of a wrinkled pore cover, a plurality of different kinds of particles having different average particle diameters may be selected and blended.

The above-mentioned cosmetics can be compounded with various components used in ordinary cosmetics within a range not to impair the effect of the present invention. (E) an emulsion, (F) a compound having an alcoholic hydroxyl group, (G) a water-soluble or water-swellable polymer compound, (H) particles other than the silicone rubber particles (A) A surfactant other than the component (D), (J) a composition containing a crosslinking organopolysiloxane and an emulsion which is liquid at room temperature, (K) an oil-absorbing coating agent, (L) silicone wax and other additives. These may be used alone or in combination of two or more.

The emulsion (E) may be solid, semi-solid or liquid. For example, natural vegetable oils and fats and oils, hydrocarbon oils, higher alcohols, ester oils, silicone oils, and fluorinated emulsions can be used.

Examples of natural plant and animal fats and semisynthetic fats include avocado oil, olive oil, carnauba wax, liver oil, candelilla wax, refined candelilla wax, hydrogenated oil, wheat germ oil, sesame oil, rice germ oil, rice bran oil, sorghum wax, The composition of the present invention can be used in a variety of foodstuffs such as milk, safflower oil, shea butter, jojoba oil, hydrogenated jojoba oil, squalane, camellia oil, evening primrose oil, corn oil, rapeseed oil, rice bran wax, germ oil, palm oil, Nuts oil, beeswax, meadow folate, cottonseed oil, wax, palm oil, hard palm oil, trehalose fatty acid glyceride and peanut oil.

Examples of the hydrocarbon oil include straight chain, branched, and volatile hydrocarbon oils. More specifically, the present invention relates to a process for producing an ethylene / propylene / α-olefin oligomer, which is an α-olefin oligomer, isoparaffin, isododecane, isohexadecane, squalane, synthetic squalane, vegetable squalane, ceresin, paraffin, paraffin wax, polyethylene wax, Styrene) copolymers, (butylene / propylene / styrene) copolymers, liquid paraffin, pristane, polyisobutylene, hydrogenated polyisobutene, microcrystalline wax, petrolatum and the like; Examples of the higher fatty acids include lauric acid, myristic acid, palmitic acid, stearic acid, behenic acid, oleic acid, isostearic acid and 12-hydroxystearic acid.

Examples of the higher alcohol include myristyl alcohol, palmityl alcohol, stearyl alcohol, behenyl alcohol, oleyl alcohol, isostearyl alcohol, hexyldodecanol, octyldodecanol, cetostearyl alcohol, Cholesterol, phytosterol, batyl alcohol, and cellulol alcohol.

Ester esters are exemplified by 2-hexyldecyl adipate, isocetyl isostearate, trimethylol propane triisostearate, ethylene glycol di-2-ethylhexanoate, cetyl 2-ethylhexanoate, Propyleneglycol monoacetate, propane, tetra-2-ethylhexanoic acid pentaerythritol, cetyl octanoate, neopentyl glycol dioctanoate, neopentyl glycol dicaprate, triethyl citrate, 2-ethylhexyl succinate, isocetyl stearate, Diisopropyl sebacate, di-2-ethylhexyl sebacate, cetyl lactate, myristyl lactate, isononyl isononanoate, isotridecyl isononanoate, isopropyl palmitate, 2-ethylhexyl palmitate, 2-hexyldecyl trimellitate, dipentaerythritol fatty acid ester, isopropyl myristate, octyldodecyl myristate, 2-hexyldecyl myristate, myristyl myristate, N-lauroyl-L-glutamic acid 2-octyldodecyls Terrue, lauroyl sarcosine isopropyl ester, diisostearyl malate, etc .; Glyceryl triisostearate, glyceryl triisostearate, glyceryl triisobutyrate, glyceryl triisobutyrate, glyceryl monostearate, glyceryl di-2-heptylundecanoate, tristearic acid And glyceride oil such as glyceryl, diglyceryl isostearate, and myristyl glyceride.

Examples of the silicone fluid include a linear or branched organopolysiloxane having a low viscosity and a high viscosity such as dimethylpolysiloxane, caprylylmethicone, phenyltrimethicone, tetrakistrimethylsiloxysilane, methylphenylpolysiloxane, methylhexylpolysiloxane, dimethylsiloxane / methylphenylsiloxane copolymer, A cyclic organopolysiloxane such as organopolysiloxane, organopolysiloxane, organopolysiloxane such as organopolysiloxane, organopolysiloxane, organopolysiloxane, organopolysiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, tetramethyltetrahydrogenocyclotetrasiloxane and tetramethyltetraphenylcyclotetrasiloxane, , Silicone rubber such as dimethylsiloxane-methylphenylsiloxane copolymer on rubber, high-grade alkoxy-modified silicone such as stearoxysilicon, and high-grade alkoxy-modified silicone such as stearoxysilicon,There may be mentioned dissipation modified silicone, alkyl-modified silicones, long chain alkyl-modified silicone, amino-modified silicone, fluorine-modified silicone and the like.

Examples of the fluorine-based emulsions include perfluoropolyether, perfluorodecalin and perfluorooctane. The blending amount of the (E) emulsion may be suitably selected in the range of 1 to 98% by mass of the whole cosmetic, depending on the formulation.

Examples of the compound (F) having an alcoholic hydroxyl group include lower alcohols such as ethanol, sugar alcohols such as sorbitol, and polyhydric alcohols such as glycerin, butylene glycol, dibutylene glycol, and pentylene glycol. The blending amount may be suitably selected in the range of 0.1 to 20 mass% of the whole cosmetic.

Examples of the water-soluble or water-swellable polymer compound (G) include vegetable high polymer compounds such as gum arabic, guar gum, carrageenan, agar, queen seed, starch, algae colloid, tragacanth gum and locust bean gum; Microbial polymer compounds such as xanthan gum, dextran, succinoglucan and pullulan; Animal-based polymer compounds such as collagen, casein, albumin, and gelatin; Cellulose-based polymeric compounds of methylhydroxypropylcellulose, hydroxymethylcellulose, hydroxypropylcellulose, and carboxymethylcellulose sodium; Alginic acid-based polymer compounds such as sodium alginate and propylene glycol alginate; (Acrylate / alkyl (C10-C30) acrylate) crosspolymer, and carboxyvinyl polymer; (Acryloyldimethyltaurine ammonium / VP) copolymer, (acryloyldimethyltaurine ammonium methacrylate behenes 25) Cross-linked poly (ethylene glycol), polyoxyethylene polyoxypropylene copolymerization system polymer compound, sodium polyacrylate, polyacrylamide, An acrylic polymer such as a polymer, a (acrylic acid Na / acryloyldimethyltaurine Na) copolymer, and a (acrylic acid hydroxyethyl / acryloyldimethyltaurine Na) copolymer; Water-swellable mineral such as bentonite, magnesium aluminum silicate, montmorillonite, saponite, hectorite and the like can be cited as other synthetic water-soluble polymer compounds such as polyethyleneimine and cationic polymer. These water-soluble polymer compounds also include those used as film-forming agents such as polyvinyl alcohol and polyvinyl pyrrolidone. The blending amount is preferably in the range of 0.1 to 20% by mass based on the total amount of the cosmetic. In the aqueous system and the O / W emulsion system, since the emulsion stabilization and the thickening effect can be easily obtained, the vinyl-based polymer compound and the acrylic polymer compound are easy to use.

(H) The particles other than the component (A) may be powders used in ordinary cosmetics. Irrespective of the shape (spherical shape, needle shape, plate shape, wood shape, fibrous shape, indefinite shape, etc.), particle diameter (burning phase, microparticle, pigment grade, etc.), particle structure (porosity, porosity, hollow, hollow porosity, Anything can be used. Examples of such powders include inorganic powders, colorants, organic powders, metal soaps, and inorganic / organic composite powders.

Examples of the inorganic powder include magnesium oxide, barium sulfate, calcium sulfate, magnesium sulfate, calcium carbonate, magnesium carbonate, talc, cleavage talc, mica, kaolin, sericite, muscovite, synthetic mica, gold mica, Particles such as aluminum silicate, magnesium silicate, magnesium aluminum silicate, calcium silicate, hydroxyapatite, zeolite, calcium phosphate dibasic, alumina, aluminum hydroxide and boron nitride.

Examples of the coloring agent include pigments and dyes. Specific examples of the color pigments include inorganic red pigments such as iron oxide, iron hydroxide and titanium iron oxide; inorganic brown pigments such as gamma -iron oxide; inorganic yellow pigments such as iron oxide yellow and loess; inorganic black pigments such as black iron oxide and carbon black; Inorganic pigment-based pigments such as silica-coated iron pigments, manganese violet and cobalt violet, inorganic green pigments such as chromium hydroxide, chromium oxide, cobalt oxide and cobalt titanate, inorganic blue pigments such as iron blue and gold blue, White pigments such as coated mica titanium and titanium oxide, pearl pigments such as synthetic gold mica, lakes of tar pigments, lakes of natural pigments, and synthetic resin powders obtained by complexing these powders . In order to improve dispersibility in cosmetics, makeup retention, and water resistance, the pigment is often used by surface treatment such as hydrophobization.

Examples of the organic powder include polymethyl methacrylate such as polyamide, polyacrylic acid-acrylic acid ester, polyester, polyethylene, polypropylene, polyurethane, vinyl resin, tetrafluoroethylene and polymethyl methacrylate, cellulose, silk, nylon, (Vinyl dimethicone / methicone silsesquioxane) crosspolymer, (diphenyl dimethicone / vinylphenyl dimethicone / silsesquioxane) crosspolymer, polysilicon-1 crosspolymer, polysilicon -22 &lt; / RTI &gt; These powders are often used in combination because they have different feelings (smooth running smoothness and softness) and absorption properties.

Examples of the metal soap include zinc stearate, aluminum stearate, calcium stearate, magnesium stearate, zinc myristate, magnesium myristate, zinc cetyl phosphate, sodium cetyl phosphate and sodium cetyl phosphate.

The inorganic / organic composite powder may be a composite powder in which a surface of a general inorganic powder is coated with a powder of an organic powder by a method commonly known in the art.

(I) Surfactants other than the components (B) and (D) are not particularly limited. Nonionic, anionic, cationic and amphoteric active agents, any of them can be used as long as they are usually used in cosmetics.

Among the known surfactants, in order to stabilize emulsification of W / O or disperse the powder in oil phase, it is preferable to use a linear or branched organopolysiloxane having a silicon skeleton in its main chain and having a polyoxyethylene chain in its molecule, Chain or branched organopolysiloxane having a glycerin chain, or an alkyl-co-modified organopolysiloxane. Examples of commercially available products include KF-6017, KF-6028, KF-6028P, KF-6038, KF-6100, KF-6104 and KF-6105 (all manufactured by Shinetsu Chemical Industry Co., Ltd.). Particularly, a surfactant in which the amount of hydrophilic polyoxyethylene group, polyoxyethylene polyoxypropylene group, or polyglycerin residue occupies 5 to 30% by mass in one molecule is preferable. The blending amount of the surfactant is preferably 0.1 to 5% by mass of the whole cosmetic.

(J) In a composition comprising a crosslinking organopolysiloxane and an emulsion which is liquid at room temperature, it is preferable that the crosslinking organopolysiloxane swell including a liquid oil of its own weight or more. Examples of the liquid phase distillation include liquid silicone oil, hydrocarbon oil, ester oil, natural vegetable oil, semi-synthetic oil and the like. Specifically, it is preferable to use a low viscosity silicone oil of 0.65 mm ² / s (25 캜) to 100.0 mm ² / s (25 캜), hydrocarbon oils such as squalane, isododecane and isohexadecane, And esters such as glyceride oil, isotridecyl isononanoate, N-acyl glutamic acid ester and lauroyl sarcosinate, and macadamia nut oil. The crosslinked organopolysiloxane preferably forms a crosslinked structure by reacting a compound having two or more vinylic reactive sites in the molecule with an organo (poly) siloxane having a hydrogen atom directly bonded to a silicon atom. Examples of the compound having two or more vinylic reactive sites in the molecule include organopolysiloxanes having at least two vinyl groups in the molecule, polyoxyalkylene having at least two allyl groups in the molecule, polyglycerol having at least two allyl groups in the molecule, ?,? - alkenyldiene, and the like. It is also possible to use a crosslinking organopolysiloxane containing at least one member selected from the group consisting of a polyoxyalkylene moiety, a polyglycerin moiety, a long chain alkyl moiety, an alkenyl moiety, an aryl moiety and a fluoroalkyl moiety in the crosslinking molecule have. The blending amount of the composition comprising the crosslinking organopolysiloxane and the emulsion which is liquid at room temperature is preferably from 0.1 to 80% by mass, more preferably from 1 to 50% by mass, based on the total amount of the cosmetic.

As the component (J), a commercially available product such as KSG-15, KSG-16, KSG-18A, KSG-1610, USG-103, KSG-210, KSG-240, KSG-710 or a hydrocarbon oil or triglyceride USG-106, KSG-41, KSG-42, KSG-43, KSG-44, KSG-310, KSG-320, KSG-330, KSG-340, KSG-810, KSG- 840 (all available from Shin-Etsu Chemical Co., Ltd.) can be used.

Examples of the (K) oil-soluble coating agent include acrylic silicone resin, silicone network resin (typically, trimethylsiloxy silicate), silicone modified pullulan, silicone modified polynorbornene, and the like. Are used alone or in combination for control of water resistance, oil resistance, adhesion (adhesion), feel, hardness, and dispersibility of powders. KP-545, KP-545, KP-545, KP-549, KP-550, KP-571, KP-575, KF-7312J, TSPL-30-D5 and NBN- ID (all available from Shin-Etsu Chemical Co., Ltd.) can be used. The amount of the component (K) is generally 0.1 to 20% by mass based on the total amount of the cosmetic.

The (L) silicone wax is preferably an acrylic / silicone graft or an acrylic silicone resin of a block copolymer. Commercially available products include KP-561P and KP-562P (all manufactured by Shin-Etsu Chemical Co., Ltd.) as a wax having a long-chain alkyl group. Because they have a melting point near the skin, they have a unique moist feel and adhesion to the skin.

The form of the cosmetic of the present invention may be a powder, a mineral oil, a water-in-oil emulsion, an underwater type emulsion, a nonaqueous emulsion, or a multi-emulsion such as W / O / W or O / W / O. In the case of adjusting the water-based cosmetic material and the O / W cosmetic material in which the water phase is a continuous phase, an aqueous dispersion of silicone rubber particles may be used, or the silicone rubber composite may be adjusted by dispersing it in water using a surfactant. The blending amount of water is appropriately selected and blended in the range of 40% to 95% of the total amount in the cosmetic. When adjusting the W / O cosmetics, the silicone rubber composite is usually dispersed in the oil phase. In this case, the blending amount of water is appropriately selected in the range of 0.1% to 70% in total in the cosmetic.

Examples of other additives that can be blended in the cosmetic of the present invention include oil-soluble gelling agents, sweat suppressing agents, ultraviolet absorbing agents, ultraviolet absorbing scattering agents, moisturizing agents, antibacterial preservatives, fragrances, salts, antioxidants, pH adjusting agents, chelating agents, Skin cosmetic ingredients (whitening agent, cell activator, skin roughness improving agent, blood circulation accelerator, skin astringent agent, anti-seborrheic agent, etc.), vitamins and amino acids.

Examples of the oil-soluble gelling agent include metal soaps such as aluminum stearate, magnesium stearate and zinc myristate; Amino acid derivatives such as N-lauroyl-L-glutamic acid and?,? - di-n-butylamine; Dextrin fatty acid esters such as dextrin palmitic acid ester, dextrin stearic acid ester, and dextrin 2-ethylhexanoic acid palmitic acid ester; Sucrose fatty acid esters such as sucrose palmitate and sucrose stearate; Fructooligosaccharide fatty acid esters such as fructooligosaccharide stearic acid ester and fructooligosaccharide 2-ethylhexanoic acid ester; Dimethylbenzyldodecyl ammonium montmorillonite clay, dimethyl dioctadecyl ammonium montmorillonite clay, and the like.

Examples of the perspiration inhibitor include aluminum chlorohydrate, aluminum chloride, aluminum sesquichlorohydrate, zirconylhydroxy chloride, aluminum zirconium hydroxychloride, aluminum zirconium glycine complex and the like.

Examples of the ultraviolet absorber include benzoic acid ultraviolet absorbers such as p-aminobenzoic acid; Anthranilic acid-based ultraviolet absorbers such as methyl anthranilate; Salicylic acid-based ultraviolet absorbers such as methyl salicylate, octyl salicylate, and trimethylcyclohexyl salicylate; Shinnam acid-based ultraviolet absorbers such as octyl paratethoxynesinate; Benzophenone-based ultraviolet absorbers such as 2,4-dihydroxybenzophenone; Ultraviolet absorbers based on urocanic acid such as ethyl urocannate; 4-t-butyl-4'-methoxy-dibenzoylmethane; Examples of the ultraviolet absorbing and scattering agent include particles absorbing and scattering ultraviolet light, such as titanium dioxide particulate, titanium oxide containing particulate iron, fine particle zinc oxide, cerium oxide and complex thereof. And a dispersion in which the ultraviolet absorbing and scattering particles are previously dispersed in an emulsion may be used.

Examples of the moisturizing agent include hyaluronic acid, chondroitin sulfate, pyrrolidone carboxylate, polyoxyethylene methyl glucoside, polyoxypropylene methyl glucoside, lecithin, phosphatidylcholine, phosphatidylglycerol, phosphatidylinositol, .

Examples of the antimicrobial preservative include parabens, benzoic acid, sodium benzoate, sorbic acid, potassium sorbate, phenoxyethanol, salicylic acid, benzalkonium chloride, chlorhexidine hydrochloride and the like.

Examples of salts include inorganic salts, organic acid salts, amine salts and amino acid salts. Examples of inorganic salts include sodium salts, potassium salts, magnesium salts, calcium salts, aluminum salts, zirconium salts and zinc salts of inorganic acids such as hydrochloric acid, sulfuric acid, carbonic acid and nitric acid; Examples of the organic acid salt include salts of organic acids such as citric acid, malic acid, succinic acid, and ascorbic acid; Examples of the amine salt and amino acid salt include salts of amines such as triethanolamine and salts of amino acids such as glutamic acid. Acid-alkali neutralized salts used in cosmetic formulations may also be used.

Examples of the antioxidant include tocopherol, dibutylhydroxytoluene and phytic acid. Examples of the pH adjuster include lactic acid, citric acid, glycolic acid, succinic acid, dl-malic acid, potassium carbonate, sodium hydrogencarbonate and ammonium hydrogen carbonate Examples of chelating agents include alanine, sodium edetate, sodium polyphosphate, sodium metaphosphate and phosphoric acid. Examples of the refreshing agent include L-menthol and camphor. Examples of the anti-inflammatory agent include allantoin, glycyrrhizic acid and its salts, glycyrrhetinic acid, Stearyl glycyrrhetinate, and Trancky tri-acid.

Examples of skin cosmetic ingredients include whitening agents such as placenta extract, arbutin, glutathione and Yukinoshita extract; Cell activators such as royal jelly, photosensitizer and cholesterol derivatives; Skin roughness improving agents; A blood circulation promoter such as benzyl ester of nicotinic acid,? -Butoxyethyl ester of nicotinic acid, capsaicin, gingerol, kantaris tincture,? -Borneol, nicotinic acid tocopherol, inositol hexanicotinate, cyclradeate, acetylcholine and? -Orizanol; Skin astringents such as zinc oxide and tannic acid; Sulfur, and thianthol; and the like.

Examples of the vitamins include vitamin A such as vitamin A oil, retinol, retinol acetate and retinol palmitate; Riboflavin, butyric riboflavin and flavin adenine nucleotide, such as the vitamins B ₂ stream, pyridoxine hydrochloride, pyridoxine di-octanoate and pyridoxine tree palmitate such as the vitamins B _6, vitamin B ₁₂ and its derivatives, and vitamin B ₁₅ and its derivatives Vitamin B; Vitamin C such as L-ascorbic acid, L-ascorbic acid dipalmitic acid ester, L-ascorbic acid-2-sodium sulfate, and L-ascorbic acid diester dipotassium; Vitamin D such as ergocalciferol and cholecalciferol; vitamin E such as? -tocopherol,? -tocopherol,? -tocopherol, dl-α-tocopherol acetate, dl-α-tocopherol nicotinate and dl-α-tocopherol succinate; Nicotinic acid such as nicotinic acid, benzyl nicotinate and nicotinamide; Pantothenic acids such as vitamin H, vitamin P, calcium pantothenate, D-pantothenyl alcohol, pantothenyl ethyl ether and acetyl pantothenyl ethyl ether, and biotin.

Examples of the amino acids include serine, arginine, lysine, proline, glutamic acid, cystine, and cysteine.

Examples of the cosmetics of the present invention include skin care cosmetics such as lotions, milky lotions, creams, cleansing, packs, oil liquids, massage oils, essences, cosmetic oils, detergents, deodorants, hand creams, lip creams, Makeup cosmetics such as white powder, powder foundation, liquid foundation, cream foundation, oil based foundation, ball touch, eye shadow, mascara, eyeliner, eyeblow and lipstick, hair cosmetic such as shampoo, conditioner, , Sunscreen oil, sunscreen oil, sunscreen oil and sunscreen cosmetics.

The shape of the cosmetic material is not particularly limited. For example, various forms such as a liquid, an oil, a cream, a solid, a paste, a gel, a powder, a press, a multilayer, a mousse, a spray, a stick and a pencil can be selected.

[Example]

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples. In the following examples, the kinematic viscosity is a value measured at 25 占 폚 by an Ostwald viscometer, and "%" representing a concentration and a content indicates "% by mass".

[Example 1]

Of silicone rubber particles Of the aqueous dispersion  Produce

250 g of a methylvinylpolysiloxane represented by the following formula (3) and having a kinetic viscosity of 130 mm ² / s,

250 g of a methylvinylpolysiloxane represented by the following formula (4) and having a kinematic viscosity of 600 mm ² / s,

And 32 g of a methylhydrogenpolysiloxane having a kinematic viscosity of 30 mm ² / s and represented by the following formula (5) (the hydrosilyl group of the olefinically unsaturated group in the compounds represented by the above formulas (3) and (4) Amount to be dog)

Was put into a glass beaker having a capacity of 1 liter, and dissolved by stirring at 2,000 rpm using a homomixer. Subsequently, 3 g of polyoxyethylene stearyl ether (trade name: Emmax 615, HLB = 14.3, manufactured by Nippon Emulsion Co., Ltd.) having a molar number of addition of ethylene oxide (hereinafter abbreviated as EO) , And the mixture was stirred at 8,000 rpm using a homomixer. As a result, the mixture became an oil-in-water type, and its boiling point was confirmed. Stirring was continued for 15 minutes. Subsequently, while stirring at 2,000 rpm, 413 g of water was added to obtain a uniform white emulsion.

The emulsion was transferred to a glass flask having a capacity of 1 liter equipped with an agitation device with an anchor type stirring wing, and the temperature was adjusted to 15 to 20 占 폚. Then, an isododecane solution of a chloroplatinic acid-olefin complex (platinum content of 0.5% ) And 1 g of polyoxyethylene sorbitan tristearate (trade name: Nicole TS-30V, manufactured by Nikko Chemicals Co., Ltd.) in the molar ratio of EO = 20 moles was added and stirred at the same temperature for 12 hours To give an aqueous dispersion of silicone rubber particles (hereinafter referred to as aqueous dispersion-1).

The shape of the silicone rubber particles in the water dispersion-1 was observed with an optical microscope, and it was spherical. The volume average particle diameter and volume cumulative 90% diameter (D90) of the silicone rubber particles were measured using an electric resistance method particle size distribution analyzer &quot; Multisizer 3 &quot; (manufactured by Beckman Coulter, Inc.) The volume average particle diameter was 9 占 퐉, and the volume cumulative 90% diameter (D90) was 12 占 퐉.

The rubber hardness of the silicone rubber particles in the water dispersion-1 was measured as follows. A methylvinylpolysiloxane represented by the formula (3), a methylvinylpolysiloxane represented by the formula (4), a methylhydrogenpolysiloxane represented by the formula (5) and an isododecane solution of a chloroplatinic acid-olefin complex 0.5%) were mixed in the same mixing ratio as in Example 1, and the mixture was introduced into aluminum shale so as to have a thickness of 10 mm. The mixture was allowed to stand at 25 占 폚 for 24 hours and then heated in a thermostatic chamber at 50 占 폚 for 1 hour to obtain a silicone rubber. The rubber hardness of the silicone elastomer was determined by a durometer A hardness meter to be 34. [

Manufacture of Silicone Rubber Composites

Water was dispersed from the aqueous dispersion-1 using a spray dryer (type: B-290, setting: inlet temperature = 150 占 폚, outlet temperature = about 80 占 폚, water dispersion supply amount = 200 g / hr) (Hereinafter referred to as &quot; silicone rubber composite-1 &quot;). The shape of the silicone rubber composite-1 was observed by an electron microscope, and it was spherical.

[Example 2]

Of silicone rubber particles Of the aqueous dispersion  Produce

Except that 6 g of polyoxyethylene stearyl ether (product name: Emulgen 320P, HLB = 13.6, manufactured by Kao Corporation) having an EO addition mole number of 13 mol was used instead of 3 g of the polyoxyethylene stearyl ether used in Example 1 (Example 1) was repeated to obtain an aqueous dispersion of silicone rubber particles (hereinafter referred to as aqueous dispersion 2).

The shape of the silicone rubber particles contained in the water dispersion-2 was observed with an optical microscope, and it was spherical. The volume average particle diameter and volume cumulative 90% diameter (D90) of the silicone rubber particles were measured using an electric resistance method particle size distribution analyzer &quot; Multisizer 3 &quot; (manufactured by Beckman Coulter, Inc.) The volume average particle diameter was 6 mu m and the volume cumulative 90% diameter (D90) was 8 mu m.

Manufacture of Silicone Rubber Composites

Water was dispersed from the water dispersion II using a spray drier (type: B-290, manufactured by Nippon Beauty Co., Ltd., inlet temperature = 150 캜, outlet temperature = about 80 캜, aqueous dispersion feed = 200 g / hr) Volatilized to obtain a granular material (hereinafter referred to as silicone rubber composite-2). The shape of the silicone rubber composite-2 was observed with an electron microscope, and it was spherical.

[Example 3]

Of silicone rubber particles Of the aqueous dispersion  Produce

Except that 3 g of polyoxyethylene stearyl ether (trade name: EMULGEN 320P, HLB = 13.6, manufactured by Kao Corporation) having an EO addition mole number of 13 mol and 3 g of EO addition moiety (Mass average HLB = 14.7) of 20 moles of polyoxyethylene stearyl ether (trade name: Nicole BS-20, manufactured by Nikko Chemicals Co., Ltd., HLB = 15.3) To obtain an aqueous dispersion of silicone rubber particles (hereinafter referred to as aqueous dispersion 3).

The shape of the silicone rubber particles contained in the water dispersion-3 was observed with an optical microscope, and it was spherical. The volume average particle diameter and volume cumulative 90% diameter (D90) of the silicone rubber particles were measured using an electric resistance method particle size distribution analyzer &quot; Multisizer 3 &quot; (manufactured by Beckman Coulter, Inc.) The volume average particle diameter was 7 mu m and the volume cumulative 90% diameter (D90) was 10 mu m.

Manufacture of Silicone Rubber Composites

Water was dispersed from the aqueous dispersion-3 using a spray dryer (type: B-290, set: inlet temperature = 150 캜, outlet temperature = about 80 캜, aqueous dispersion feed = 200 g / hr) And then volatilized to obtain a granular material (hereinafter referred to as silicone rubber composite 3). The shape of the silicone rubber composite material-3 was observed by an electron microscope, and it was spherical.

[Example 4]

Of silicone rubber particles Of the aqueous dispersion  Produce

Except that 6 g of polyoxyethylene isostearyl ether (trade name: Emmax 1815, HLB = 14.3, manufactured by Japan Emulsion Co., Ltd.) having an EO addition mol number of 15 mol was used instead of 3 g of the polyoxyethylene stearyl ether used in Example 1 (Example 1) was repeated to obtain an aqueous dispersion of silicone rubber particles (hereinafter referred to as aqueous dispersion 4).

The shape of the silicone rubber particles contained in the water dispersion-4 was observed with an optical microscope, and it was spherical. The volume average particle diameter and volume cumulative 90% diameter (D90) of the silicone rubber particles were measured using an electric resistance method particle size distribution analyzer &quot; Multisizer 3 &quot; (manufactured by Beckman Coulter, Inc.) The volume average particle diameter was 5 占 퐉, and the volume cumulative 90% diameter (D90) was 6 占 퐉.

Manufacture of Silicone Rubber Composites

Water was dispersed from the aqueous dispersion-4 using a spray dryer (type: B-290, setting: inlet temperature = 150 캜, outlet temperature = about 80 캜, aqueous dispersion feed = 200 g / hr) Volatilized to obtain a particulate material (hereinafter referred to as silicone rubber composite-4). The shape of the silicone rubber composite-4 was observed with an electron microscope, and it was spherical.

[Comparative Example 1]

Of silicone rubber particles Of the aqueous dispersion  Produce

3 g of polyoxyethylene stearyl ether (trade name: Nicole BS-20, manufactured by Nikko Chemicals Co., Ltd., HLB = 15.3) having an addition mol number of EO = 20 mols was used instead of 3 g of the polyoxyethylene stearyl ether used in Example 1 Example 1 was repeated except that the aqueous dispersion of silicone rubber particles (hereinafter referred to as aqueous dispersion 5) was obtained.

The shape of the silicone rubber particles contained in the obtained water dispersion liquid-5 was observed with an optical microscope and found to be spherical. The volume average particle diameter and volume cumulative 90% diameter (D90) of the silicone elastomer particles were measured using an electric resistance method particle size distribution analyzer &quot; Multisizer 3 &quot; (manufactured by Beckman Coulter, Inc.) The volume average particle diameter was 10 占 퐉, and the volume cumulative 90% diameter (D90) was 21 占 퐉.

Manufacture of silicone rubber composites

Water was dispersed from the aqueous dispersion 5 using a spray dryer (manufactured by Nippon Beauty Co., Ltd., model: B-290, setting: inlet temperature = 150 캜, outlet temperature = about 80 캜, aqueous dispersion supply amount = 200 g / hr) Volatilized to obtain a particulate material (hereinafter, referred to as silicone rubber composite 5). The shape of the silicone rubber composite-5 was observed by an electron microscope, and it was spherical.

[Comparative Example 2]

Of silicone rubber particles Of the aqueous dispersion  Produce

Except that 3 g of the polyoxyethylene stearyl ether used in Example 1 was replaced with 1.2 g of polyoxyethylene stearyl ether (trade name: Nicole BS-4, HLB = 7.9, manufactured by NIKKO CHEMICALS CORPORATION) (Mass average HLB of the mixture: HLB = 12.3) of EO addition mole number = 20 mols of polyoxyethylene stearyl ether (trade name: Nicole BS-20, HLB = 15.3, manufactured by Nikko Chemicals Co., Ltd.) Example 1 was repeated. Methylvinylpolysiloxane and methylhydrogenpolysiloxane were added 50 g of polyoxyethylene stearyl ether with 20 mol of polyoxyethylene stearyl ether and 4 mol of polyoxyethylene stearyl ether added with EO addition mole number = 4 mol, and 50 g of water were added to the melt of the homopolymer But the emulsion could not be obtained because it was not an oil-in-water type.

[Comparative Example 3]

Of silicone rubber particles Of the aqueous dispersion  Produce

Except that 3 g of the polyoxyethylene stearyl ether used in Example 1 was replaced by 1 g of polyoxyethylene behenyl ether having an EO addition mole number of 10 moles (trade name: Nicole BB-10, HLB = 11.5, manufactured by NIKKO CHEMICALS CORPORATION) (Mass average HLB of the mixture: 13.6) of 2 mol of polyoxyethylene behenyl ether (trade name: Nicole BB-20, manufactured by Nikko Chemicals Co., Ltd., HLB = 13.6) 1 was repeated to obtain a uniform white emulsion.

This emulsion was transferred to a 1-liter glass flask equipped with a stirrer with an anchor type stirring vane, and the temperature was adjusted to 15 to 20 ° C. Thereafter, an isododecane solution (platinum content 0.5%) of chloroplatinic acid- , And 1 g of polyoxyethylene sorbitan tristearate (trade name: Nicol TS-30V, manufactured by Nikko Chemicals Co., Ltd.) in the molar ratio of EO = 20 moles was added and stirred at the same temperature for 12 hours A large amount of agglomerated particles were produced, and an aqueous dispersion of silicone rubber particles could not be obtained.

The carbon number and HLB value of the alkyl group of the polyoxyethylene alkyl ether in Examples 1 to 4 and Comparative Examples 1 to 3 and the mass% in the whole water dispersion and the volume average particle diameter, volume cumulative 90% diameter (D90) and the mass% of the entire water dispersion are shown in Table 1.

[Evaluation of usability of oily cosmetic materials (Example 5, Comparative Example 4)] [

Using the silicone rubber composite obtained in Example 1 and Comparative Example 1, oily cosmetic materials were prepared by the following methods, and their adhesion and application properties were evaluated by the following methods.

&Lt; Preparation of cosmetic &

A: Components (1) to (7) shown in Table 2 were uniformly mixed.

B: A non-aqueous concealer was obtained by uniformly mixing A using a three-roll mill.

(1) Sensory Evaluation: Adhesion

And 1 g of each sample was applied to a previously cleaned hand. Evaluation was made by naked eyes of a professional panelist (10 persons) to see whether the sample could be evenly spread without tangling when the sample was spread with a finger. The evaluation criteria were 5 points when there was little tangling, 3 points when tangling slightly, and 1 point when tangling was very tangent, and the total points were calculated. The results are shown in Table 2 based on the following indices.

○: 40 points or more total points

?: 21 to 39 total points

×: The total point is 20 points or less

(2) Sensory evaluation: Coating property

Expert panelists (10 persons) evaluated the ease of application of the sample when each sample was applied to the face. The evaluation criteria were 5 points when it was felt to be easy to apply, 3 points when it was difficult to apply a little, and 1 point when it was very difficult to apply, and the total points were calculated. The results are shown in Table 2 based on the following indices.

○: 40 points or more total points

?: 21 to 39 total points

×: The total point is 20 points or less

As shown in Table 2 above, the cosmetic material containing the silicone rubber composite of the present invention was excellent in adhesiveness and applicability. The wrinkle cover effect and pore cover effect were also good. On the other hand, the cosmetic composition containing the silicone rubber composite of Comparative Example 1 resulted in bad adhesion and application properties. That is, a cosmetic composition containing a silicone rubber composite containing silicone rubber particles having a volume cumulative 90% diameter too large tends to be entangled, has poor applicability, and can not sufficiently attain the effect as a cosmetic.

Examples of the cosmetic composition containing the aqueous dispersion or silicone rubber composite of the present invention are shown in Examples 6 to 11 below. In the following process, mixing was carried out using a Disper mixer (T.K.HOMODISPER (manufactured by Freimix Co., Ltd.): hereinafter referred to as a dispenser).

[Examples 6 and 7]

Non-aqueous system  Concealer

&Lt; Preparation of cosmetic &

A: Components (1) to (7) shown in Table 3 were uniformly mixed.

B: Component (8) shown in Table 3 was added to A and uniformly mixed to obtain a non-aqueous concealer.

The non-aqueous concealer comprising the silicone rubber composite of the present invention had a good wrinkle coverage effect and a pore cover effect. Example 6 is a low viscosity type and Example 7 is a high viscosity type, and viscosity can be adjusted.

[Example 8]

W / O Milk

&Lt; Preparation of cosmetic &

A: Components (1) to (7) shown in Table 4 were uniformly mixed with a disper.

B: Components (8) to (11) shown in Table 4 were uniformly mixed and added to A and emulsified to obtain a W / O emulsion.

W / O emulsions containing the silicone rubber composite of the present invention showed less stickiness and less oil, and had a wrinkle cover effect and a pore cover effect.

[Example 9]

Sun Kurt  Lotion( Shaking  type)

&Lt; Preparation of cosmetic &

A: Components (1) to (8) shown in Table 5 were uniformly mixed with a disper.

B: Components (10) to (14) shown in Table 5 were uniformly dissolved.

C: B was added to A to emulsify, and component (9) was added and uniformly mixed to obtain a shaking type sun cut lotion.

The sun cut lotion comprising the silicone rubber composite of the present invention was less sticky or oily and had a good feeling of use.

[Examples 10 and 11]

Emulsion liquid foundation

&Lt; Preparation of cosmetic &

A: Components (1) to (10) shown in Table 6 were uniformly mixed with a disper.

B: Components (11) to (14) shown in Table 6 were uniformly mixed.

C: B was added to A to emulsify, and components (15) to (20) separately dispersed with three rollers were added and uniformly mixed to obtain an emulsified liquid foundation.

The emulsion liquid foundation containing the silicone rubber composite of the present invention had less stickiness and oiliness, and had a good feeling of use. It can also be used as a thickener in prescriptions that are less viscous (Example 11).

[Example 12]

O / W milky lotion

&Lt; Preparation of cosmetic &

A: Components (1) to (5) shown in Table 7 were uniformly mixed.

B: Components (6) to (9) shown in Table 7 were uniformly mixed.

C: B was added to A to emulsify, component (10) was added and uniformly mixed to obtain an O / W emulsion.

The O / W milky lotion containing the aqueous dispersion of the present invention was less sticky or oily and had a good feeling of use. By using the silicone powder of KSP-100, it is possible to impart a feeling without stickiness even when the alcohol is reduced (Example 13).

[Example 14]

Powder Foundation

&Lt; Preparation of cosmetic &

A: Components (1) to (2) shown in Table 8 were uniformly mixed.

B: Components (3) to (10) shown in Table 8 were uniformly mixed.

C: A was added to B and mixed homogeneously in a Henschel mixer. The obtained powder was passed through a mesh, and then was stamped on a gold plate using a metal mold to obtain a powder foundation.

The powder foundation comprising the silicone rubber composite of the present invention had softness and good feeling.

The aqueous dispersion of the present invention provides an emulsion having good stability. Since the present invention uses a polyoxyethylene alkyl ether having a carbon number of 18 as a surfactant, the obtained aqueous dispersion and silicone rubber composite can further reduce irritation to the skin as compared with conventional silicone rubber particles and aqueous dispersion . The cosmetic composition containing the aqueous dispersion or silicone rubber composite of the present invention is excellent in feeling of use and is useful for various cosmetics.

Claims (14)

(A) Silicone rubber particles having a volume cumulative 90% diameter (D90) of 0.3 to 20 mu m
Based on the total mass of the aqueous dispersion, 5 to 80 mass%
(B) at least one of polyoxyethylene alkyl ethers having an HLB value of 12.8 to 15.1 and an alkyl group having a carbon number of 18
0.01 to 15% by mass with respect to the total mass of the aqueous dispersion,
And
(C) 19 to 94 mass% with respect to the mass of the entire water-water dispersion,
By weight of the silicone rubber particles. The positive resist composition according to claim 1, wherein the component (B) is a compound represented by the following formula (1)

(Wherein m is an integer of 2 to 50)
And a compound represented by the following formula (2)

(Wherein m is an integer of 2 to 50)
And an organic solvent. 3. The aqueous dispersion according to claim 1 or 2, wherein the alkyl group in the component (B) is linear. 3. The aqueous dispersion according to claim 1 or 2, further comprising (D) at least one selected from polyoxyethylene sorbitan monostearate and polyoxyethylene sorbitan tristearate. The positive resist composition according to claim 1 or 2, wherein the component (A) is at least one organopolysiloxane having at least two monovalent aliphatic unsaturated groups bonded to silicon atoms in one molecule and at least one hydrogen atom bonded to silicon atoms Is an addition reaction product of an organohydrogenpolysiloxane having two aliphatic unsaturated groups and at least one of the hydrogen atoms is present in at least three of the molecules. (A) at least one of the polyoxyethylene alkyl ethers having an HLB value of 12.8 to 15.1 and an alkyl group having a carbon number of 18, on the surface of the silicone rubber particles having a volume cumulative 90% diameter (D90) of 0.3 to 20 mu m Substances that are formed. The positive resist composition according to claim 6, wherein the component (B) is a compound represented by the following formula (1)

(Wherein m is an integer of 2 to 50)
And a compound represented by the following formula (2)

(Wherein m is an integer of 2 to 50)
&Lt; / RTI &gt; The substance according to claim 6 or 7, wherein the alkyl group in the component (B) is linear. The substance according to claim 6 or 7, further comprising (D) at least one selected from polyoxyethylene sorbitan monostearate and polyoxyethylene sorbitan tristearate. The positive resist composition as claimed in claim 6 or 7, wherein the component (A) is an organopolysiloxane having at least two monovalent aliphatic unsaturated groups bonded to silicon atoms in one molecule and at least one hydrogen atom bonded to silicon atoms And an organohydrogenpolysiloxane having two aliphatic groups (provided that at least one of the aliphatic unsaturated groups and the hydrogen atoms is present in at least three of the molecules). A process for producing a substance according to claim 6 or 7, wherein water is removed from the aqueous dispersion according to any one of claims 1 to 7. 12. The method according to claim 11, wherein water is removed by spray drying. A cosmetic comprising the aqueous dispersion according to claim 1 or 2. A cosmetic comprising the substance according to claim 6 or 7.